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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0 
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License.
 */

package org.apache.woden.wsdl20.extensions.rpc;

/**
 * Direction is a typesafe enumeration of the four
 * possible values, #in, #out, #inout, and #return.
 * 
 * @author Arthur Ryman ([email protected])
 */

public class Direction {
	
	private String token;
	
	private Direction(String token) {
		
		this.token = token;
	}

	public static final Direction IN = new Direction("#in");
	public static final Direction OUT = new Direction("#out");
	public static final Direction INOUT = new Direction("#inout");
	public static final Direction RETURN = new Direction("#return");
	
	public String toString() {
		
		return token;
	}
}